How to convert kilojoules to kilocalories
To convert kilojoules (kJ) to kilocalories (kcal), divide the value in kilojoules by 4.184.
kcal = kJ ÷ 4.184
Example: 5 kJ = 1.195028681 kcal.
You can also type 5 kJ to kcal into the smart calculator, or mix units: 1 kJ + 1 kcal.
Kilojoules to Kilocalories conversion table
| Kilojoules | Kilocalories |
|---|---|
| 0.01 kJ | 0.0023900574 kcal |
| 0.1 kJ | 0.023900574 kcal |
| 0.25 kJ | 0.059751434 kcal |
| 0.5 kJ | 0.11950287 kcal |
| 1 kJ | 0.23900574 kcal |
| 2 kJ | 0.47801147 kcal |
| 3 kJ | 0.71701721 kcal |
| 4 kJ | 0.95602294 kcal |
| 5 kJ | 1.1950287 kcal |
| 6 kJ | 1.4340344 kcal |
| 7 kJ | 1.6730402 kcal |
| 8 kJ | 1.9120459 kcal |
| 9 kJ | 2.1510516 kcal |
| 10 kJ | 2.3900574 kcal |
| 12 kJ | 2.8680688 kcal |
| 15 kJ | 3.585086 kcal |
| 20 kJ | 4.7801147 kcal |
| 25 kJ | 5.9751434 kcal |
| 30 kJ | 7.1701721 kcal |
| 40 kJ | 9.5602294 kcal |
| 50 kJ | 11.950287 kcal |
| 60 kJ | 14.340344 kcal |
| 75 kJ | 17.92543 kcal |
| 100 kJ | 23.900574 kcal |
| 250 kJ | 59.751434 kcal |
| 500 kJ | 119.50287 kcal |
| 1,000 kJ | 239.00574 kcal |
Converting kilocalories back to kilojoules
1 kcal = 4.184 kJ. See the Kilocalories to Kilojoules converter, or press the swap button above.
About the units
Kilojoule (kJ)
One thousand joules. Food labels in Australia and Europe show kJ alongside kcal.
Kilocalorie (kcal)
One thousand calories, the "Calorie" printed on food labels.
Energy is the capacity to do work. The SI unit is the joule. Food energy is labelled in kilocalories (Calories with a capital C) or kilojoules, electricity is billed in kilowatt-hours, and heating often uses BTU or therms.
Questions and answers
How many kilocalories are in a kilojoule?
One kilojoule (kJ) equals 0.2390057361 kilocalories (kcal).
How do I convert kilojoules to kilocalories?
To convert kilojoules to kilocalories, divide the value in kilojoules by 4.184. The formula is kcal = kJ ÷ 4.184. For example, 5 kJ = 1.1950287 kcal.
What is 5 kJ in kcal?
5 kilojoules is 1.195028681 kilocalories.
Which is bigger, a kilojoule or a kilocalorie?
A kilocalorie is bigger: 1 kcal = 4.184 kJ.
Are Calories on food labels the same as calories?
No. The food Calorie (capital C) is a kilocalorie: 1,000 small calories, or 4.184 kilojoules.
Does this kJ to kcal converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.